@@ -684,10 +684,17 @@
 	@throw [OFNotImplementedException newWithClass: isa
 					      selector: _cmd];
 }
 
 - lower
+{
+	@throw [OFNotImplementedException newWithClass: isa
+					      selector: _cmd];
+}
+
+- removeCharactersFromIndex: (size_t)start
+		    toIndex: (size_t)end
 {
 	@throw [OFNotImplementedException newWithClass: isa
 					      selector: _cmd];
 }